I would like to filter out all common names of certificates in the current folder to troubleshoot which certificates are trusted.

CodePudding user response：

Common name can be filtered using the following command:

$ openssl x509 -noout -subject -in /etc/ssl/glusterfs.pem

Looping over files in the current folder can be achieved with:

$ for f in *; do echo "Processing $f file..."; done

To display common names for all certificates in current folder:

$ for f in *; do openssl x509 -noout -subject -in $f; done